Properties of the X(3872)
Conference
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· J.Phys.Conf.Ser.9:72-74,2005
OSTI ID:15017281
X(3872) discovery was confirmed with the CDF II detector in {bar p}p collisions. They measure its mass to be 3871.3 {+-} 0.7 {+-} 0.4 MeV/c{sup 2}. The source of the X state in the large CDF sample is resolved by studying their vertex displacement. They find 16.1 {+-} 4.9 {+-} 2.0% comes from decays of b-hadrons, and the remainder from prompt sources: either direct production or by decay of (unknown) short-lived particles. The mix of production sources is similar to that observed for the {psi}(2S) charmonium state.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 15017281
- Report Number(s):
- FERMILAB-CONF-04-460-E; TRN: US0605173
- Journal Information:
- J.Phys.Conf.Ser.9:72-74,2005, Conference: To appear in the proceedings of 32nd International Conference on High-Energy Physics (ICHEP 04), Beijing, China, 16-22 Aug 2004
- Country of Publication:
- United States
- Language:
- English
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Observation of the narrow state x (3872) --> j/psi pi+ pi- in pbar p collisions at s**(1/2) = 1.96 tev
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Fri Feb 27 00:00:00 EST 2004
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OSTI ID:15017281
Measurement of the Dipion Mass Spectrum in the Decay X(3872) → J/Ψ π+ π- at the CDF II Experiment
Thesis/Dissertation
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Wed Jun 01 00:00:00 EDT 2005
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OSTI ID:15017281